eXpansys offers the AMZER Flip Case with Swipe Window for Samsung Galaxy S4 in Black, model no. AMZ96601, White, model no. AMZ96188, Pink, model no. AMZ96189, Green, model no. AMZ96190, Orange, model no. AMZ96192, or Yellow, model no. AMZ96193, for $9.50 with free shipping. That's tied with our mention from last week and the lowest total price we could find by $2, outside of the price below. This cover replaces the original hard battery cover and features a swipe window for viewing without opening the case.
A close price: Amazon charges $9.95 with free shipping, although some colors are temporarily out of stock. (Even those models are still orderable.)